package com.qk.dm.dataservice.config;

import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

/** @author shenpengjie */
@Configuration
public class RestTemplateConfig {
  @Bean
  public RestTemplate restTemplate() {
    return new RestTemplate(httpRequestFactory());
  }

  public ClientHttpRequestFactory httpRequestFactory() {
    return new HttpComponentsClientHttpRequestFactory(httpClient());
  }

  public HttpClient httpClient() {
    Registry<ConnectionSocketFactory> registry =
        RegistryBuilder.<ConnectionSocketFactory>create()
            .register("http", PlainConnectionSocketFactory.getSocketFactory())
            .register("https", SSLConnectionSocketFactory.getSocketFactory())
            .build();
    PoolingHttpClientConnectionManager connectionManager =
        new PoolingHttpClientConnectionManager(registry);
    // 设置整个连接池最大连接数 根据自己的场景决定
    connectionManager.setMaxTotal(100);
    // 路由是对maxTotal的细分
    connectionManager.setDefaultMaxPerRoute(100);
    RequestConfig requestConfig =
        RequestConfig.custom()
            // 服务器返回数据(response)的时间，超过该时间抛出read timeout
            .setSocketTimeout(30000)
            // 连接上服务器(握手成功)的时间，超出该时间抛出connect timeout
            .setConnectTimeout(15000)
            // 从连接池中获取连接的超时时间，超过该时间未拿到可用连接，
            // 会抛出org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for
            // connection from pool
            .setConnectionRequestTimeout(1000)
            .build();
    return HttpClientBuilder.create()
        .setDefaultRequestConfig(requestConfig)
        .setConnectionManager(connectionManager)
        .build();
  }
}
